op east lebanon



A. W. HALL. FRIGTION CLUTCH.

No. 74,080. r Patented Feb. 4 1868..

WMA

@uiten faire l gat-tnt @fnf drawings formingl part of this specification.

A. W. HALL, 0F EAST LEBANON, NEv;r rnlnrsifurn;V

Lettera Patent No. 74,080, dated February 4, 1868,

IMPBOVED FRIGTION-CLUTGH.

To ALLWHQM 1T MAY ooNcERN:

, Be it known that I, A W. HALL, of EastnLebanon, Grafton county, New Hampshire, have invented a new and improved Clutch and I do hereby declare that the following is a full, clear, and exact description thereof, which will enubleothers slcilled in the art to make and use the same, reference being had to'theaccompanying The present invention relates to an improved clutch,` by means ofl which a pulley or other device can be clutched to and set free from a shaft, without the least jar or danger of breakage to the clutch,.or the parts in connection with which it is arranged to operate. In the accompanying plate of.drawings,my improved clutch 'is illustrated- Figure'l being a plan orjop view of the same, and Figure 2 a section, taken in the plane of the line x x, iig. 1. A, in the drawings, represents a shaft, which, forconvenience` of illustration, is shown as supported in bearings at each end, or cross-piece B, of a frame, C. C, a loose pulley on shaft A, to connect which with the same, a clutch, D, is arranged'upon the shaft; the construction of which will be now described.

This clutch D is made in -two parts or sections, E and F, with the former, E, surrounding the shaft, and the latter, F, surrounding that; the inner one being splined to the shaft, and the outer, to the inner,vas' plainly ,shown in the drawings, iig. 2, whereby, while susceptible of being slid, the one upon the shaft, and the other upon 'that which can play upon the shaft, they will both 4turn together and with the shaft as it revolves. For sliding the two plates E and F to the Vclutch on the shaft, they are each provided with a separate operating-lever, H, suitably connected therewith, so as not to interfere with their rotation with the shaft. The inner section of the clutch is, at its end toward the pulley, providefLwith ratchet-teeth a, so that when brought up against the side of the pulley thereto, and'which is similarly provided with ratchet-teeth b, the two will be intel-locked, and thus the pulleyclutched tothe shaft. The outer section of the clutch,'ut its end toward thepul'ley, is left smooth, so that when brought against the surface of N, surrounding the teeth to the pulley C, it will, by its friction thereon, clutch such pulley with the shaft; the pulley in this case, as well as in the case of the corner section,

being held from moving away fromveithcr by means of the collar O around the shaft.

By the double-clutch above described, it is plainly obvious that if the shaft is running at a speed, either more or less great, by moving the friction-clutch first against the pulley and then theratchet-clutch, the pulleyl can be clutched to the shaft with no jar to the machinery, or danger of the breakage of parts.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is The two-part clutch E and I", substantially as and for the purpose described. The above specification of my invention signed by me, this 18th day of April, 1867.-

i A. W. HALL'.

' Witnesses:

WM. F. McNAMAuA, Ansx. F'. Rossa'rs. 

